Superheater-pipe support



R, P. LA FORTE SUPERHEATER PIPE SUPPORT.

APPLICATION FILED JAN. 8, 1920.

Patented Dec. 28; 1926 WITNE ATTORNY I] w a an stares SUPERHEATER-PIPE SUPPORT.

Specification of Letters latent- Patented Dec. 28, 122th.

Application filed January 8, 1920. Serial No. 350,189.

To all whom e'zi may concern:

Be it known that I, RALPH P. LA Poems, of Schenectady, in the county of Schenectady and State of New York, have invented a certain new and useful Improvement in superheater-Pipe Supports, of which improvement the following is a specification.

My invention relates to means for sup porting superheater units, with proper and uniform clearance, in boiler tubes in which they are installed for operation, and its objects are to elfect a reduction in the number of parts of the support,'relatively to that in prior practice; to simplify and economize the manufacture of the support; to enable the Width of the bearing shoes to be reduced, and thereby to reduce the di ameter of tube necesary to accommodate a superheater unit; to reduce the cross sectional area of obstruction to tube gases; and to reduce structural weakness and the thickness of material required.

The improvement claimed is hereinafter fully set forth:

In the accompanying drawings: Figure 1 is an end view of a superheater pipe support embodying my invention; Fig. 2, a longitudinal section, on the line a a of Fig. 1;

F ig; 3, a side elevation of the outer band, before being bent into operative form; Fi S. i and 5, views, corresponding, respective y, in character, with Figs. 1 and 2, but showing a structural modification; Fig. 6, a view, corresponding in character with Fig. 3, of the outer band of Figs. 4 and 5, and; Fig. 7, an end view of the support of Fig. 1, located in a boiler tube.

My invention is herein exemplified as applied in a support for a superheater unit of four pipes, indicated by broken line circles, said support being made up of four rigidly and permanently connected members, to wit, an outer inclosing band, 1, of plate metal; an inner spacing member, 2, also of plate metal; and two lower bearing shoes, 3, 3, cut from metal bars and adapted to rest, either directly or intermediately, on the inner surface of the boiler tube in which the superheater unit is to be installed for service.

The plate of the outer band, 1, is bent into the form, in transverse section, shown in Figs. 1 and 4, z'. 2., having a contour which is quadrangular, with its angles cut off by quarter circles, and curved inwardly,

on quarter circle turns, at bottom to a short, flat, middle section. The plate of the inner spacing member 2, is bent into the form in transverse section, of a figure presenting segmental curves on the sides of its top and bottom, the bottom curves being separated by a short fiat middle section, corresponding with that of the outer band.

The curved corner portions of the outer band are disposed symmetrically about the axial line of the inner spacing member, which line is designed to coincide with the axial line of the boiler tube in which the support is to be set. The ends of the outer band plate are brought together to form a lap seam, 1 and are secured together by riveting or welding. The ends of the inner spacing member plate are similarly brought together, to form a lap seam,2 and are secured together, and to the flat middle section of the outer band, by riveting or welding. The bearing shoes, 3, 3, are secured to the outer band by welding.

The structural modification shown in Figs. at to 6 inclusive, acords, in all essential particulars, with the construction above described, the only difference being the minor one that in this instance the outer band is bent to form recesses, in which the bearing shoes are fitted and secured by welding, so that the outer band will abut against the boiler tube throughout the width of the shoe, instead of being inside of the shoes, as in the construction shown in Figs. 1 to 3 inclusive.

My invention reduces the number of parts of a superheater pipe support, as compared with those of prior practice; simplifies and economizes the manufacture of the support, and imparts greater strength thereto, by eliminating riveted joints between the shoes and outer band; and enables the transverse extent of the support to be reduced, with the resultant advantage of reducing obstruction to the gases passing through the boiler tube, and reducing the minimum diameter of boiler tube required to admit the superheater unit and support. I claim as my invention and desire to secure by Letters Patent:

1. In a superheater pipe support, the combination of an integral inclosing outer band I which is bent outwardly .to form the boundaries of recesses, and having its ends secured together; an-inner spacing member,

which is secured to the outer band; and her, the ends of which are secured to the 10 bearing shoes, fitting in the recesses of the middle flat section. of the outer band; and outer band, and secured thereto by welding. bearing shoes, welded to the outer band, at

2. In a superheater pipe support, the comopposite sides of its. lower portion. bination of an integral inclosing outer band RALPH P LA FORTE which is curved substantially semicircularly at its bottom corners to a short middle fiat Witnesses: section, and has its ends lapped and secured WILLIAM s H. CLARK, together at its top; an inner spacing mem- PAUL D. GUENOT. 

